package com.itheima.api_demo.object_demo;

import java.util.ArrayList;
import java.util.Random;
import java.util.Scanner;

public class Test {
    public static void main(String[] args) {
//        Scanner sc = new Scanner(System.in);
//        System.out.println(sc);

//        Random r = new Random();
//        System.out.println(r);

        ArrayList<String> list = new ArrayList<>();
        list.add("abc");

        System.out.println(list); // 内容!
    }
}
